A vessel with a volume of 26.9 L contains 2.80 g of nitrogen gas,0.605 g of hydrogen gas,and 79.9 g of argon gas.At 25°C,what is the pressure in the vessel?
A) 75.5 atm
B) 0.183 atm
C) 2.55 atm
D) 2.18 atm
E) 58.7 atm

Question

Quizplus · Accepted Answer

The correct answer is D.The total number of moles of gas in the vessel is:n = (2.80 g N2 / 28.01 g/mol) + (0.605 g H2 / 2.016 g/mol) + (79.9 g Ar / 39.95 g/mol) = 2.50 molThe pressure in the vessel is:P = nRT/V = (2.50 mol * 0.0821 Latm/(molK) * 298 K) / 26.9 L = 2.18 atm

A Vessel with a Volume of 26